Back in my paramedic days, I was a field PTSD counselor. One of the most important things to remember, is there are no "wrong" feelings when it comes to dealing with issues like this. If you're angry, or depressed, or indifferent, what ever you feel, is how you feel.
I will say, be careful about "medicating" with alcohol. It may seem like the easy thing to do, but high stress occupations, ones that deal with PTSD issues on a regular basis like cops and paramedics, have higher than normal alcoholism rates. You don't want to start down that road.
Don't be afraid of your feelings, or finding someone to talk to. Like some have said, maybe it's a coworker, maybe it's a professional psychologist. When the Alaska Airlines MD80 crashed off the coast of CA about 10 years ago, my good friend, a still shooter for a newspaper, was sent out on a boat to cover the rescue efforts. As they came upon some debris, the rescuer went to grab it, and as it turned over, they found half a body still buckled into the seat. He knew I was a PTSD counselor, called me at 2am when they got back to shore, and cried for an hour. We have a great jovial, good natured-teasing relationship, but it's never been brought up since.
Personally, I like to leave work at work. In my paramedic days, I accomplished this by never wearing my uniform or boots to or from work. For me, this was the way to mentally create a divide between work and home. Same goes for TV news. I don't own a video camera, I don't do any editing at home, and I try to do my other hobbies away from work as much as possible.
Have personal escapes, leave work at work, don't be afraid to talk to someone and don't be embarrassed at how you feel.